Upon contraction, the smallest motor unit, that is, the one associated with the fewest muscle fibers, is the normally the first activated. As the contraction progresses, larger motor units are brought into play.Efficient muscle contraction depends on the motor units within a muscle working effectively together.pon contraction, the smallest motor unit, that is, the one associated with the fewest muscle fibers, is the normally the first activated. As the contraction progresses, larger motor units are brought into play.
Trojan programs are most dangerous because they can create a back door. into your computer that gives malicious hackers direct access to your. system. Once installed, Trojans can hijack your PC and upload usernames, passwords, credit card numbers, social security numbers, and bank account.
Spyware is similar to Adware, but it has a malicious intent. Both types of programs are stealthily introduced to the user's computer. In the case of Spyware and some Adware, the user is unaware of this invasion.The presence of either can be the cause of slowing down the speed of a computer.pyware is also called malware. Not all spyware is malicious. Some types of spyware may be installed on purpose, by the computer owner in order to track or monitor the activity of other users secretly. This may be used in some corporate, shared or public computer situations.